Sink accessory



FIG. 1 is a top, front, left perspective view of a sink accessory showing our new design;

FIG. 2 is a bottom, front, right perspective view of the embodiment of FIG. 1;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a right elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a top, front, left perspective view of FIG. 1 in an extended position; and,

FIG. 10 is a bottom, front, right perspective view thereof.

The broken lines show portions of the design that form no part of the claimed design. 

CLAIM We claim the ornamental design for a sink accessory, as shown and described. 